16 years of Oil production from Mangala – India’s largest onshore oil production field

Cairn Oil & Gas reaffirms commitment to enhancing production from the field for India’s energy aatmanirbharta

New Delhi, 28th August 2025: Cairn Oil & Gas, part of Vedanta Limited, and India’s largest private oil and gas exploration and production company, has completed 16 years of First Oil from its legacy Mangala field in Barmer, Rajasthan. Discovered in 2004 and brought into production in 2009, Mangala remains the largest onshore oil discovery of its time. Since inception, the field has produced over 535 million barrels of oil equivalent (mmboe), playing a vital role in meeting India’s energy needs and driving socioeconomic progress in Rajasthan.

Cairn’s operations in Barmer have transformed the region’s economy, with the district’s GDP rising by over 650%, creating employment, entrepreneurial avenues, and sustainable livelihoods. With an untapped reserve base of 650 mmboe, the Rajasthan basin continues to hold immense potential to power India’s growing energy demand.

The Mangala field has also been a hub for world-class innovations. Cairn commissioned the world’s longest continuously heated and insulated pipeline (~705 km) from Rajasthan to Gujarat, executed the world’s largest Enhanced Oil Recovery (EOR) project and jet pump network.

To achieve energy security and build national energy sovereignty amid evolving geopolitical scenarios, the company continues to invest in exploration and enhance recovery, to unlock the additional reserves and sustain long-term production from the fields. Cairn implemented India’s largest commercial ASP injection in Mangala last year, boosting recovery by additional 20%, and is set to begin Phase two of ASP injection across its Rajasthan fields.

After the successful Tight Oil project in Aishwariya, the same is planned to be executed in Barmer Hills basin.

Cairn has awarded contracts to global leaders such as Halliburton, Nabors, Baker Hughes, and Weatherford to bring advanced technologies and best practices to India’s largest onshore field. In addition, nearly two dozen global technical experts have been onboarded, many of them stationed in Barmer, to execute high-capex exploration and production campaigns.

Beyond its core operations in the region, Cairn’s social impact programmes in areas of healthcare, sanitation, education, and women empowerment have positively impacted 197 million lives in the last six years. The company’s flagship women-led initiatives, such as Jiji Bai, Maru Udaan, and the Handloom Center, have empowered over 6,500 women through skill development, entrepreneurship, and financial literacy programs.

As a key private player in India’s energy landscape, Cairn Oil & Gas is committed to contributing 50% of the country’s domestic oil and gas production, while progressing towards its vision of a sustainable, energy-secure future.

About Cairn Oil & Gas

Cairn Oil & Gas, part of Vedanta Limited, is India’s largest private oil and gas exploration and production company, contributing about a quarter of India’s domestic crude production and driving energy security for the country. With a world-class resource base, Cairn has an interest in 63 blocks in India spread over 73,000 square kilometres with gross 2P (Gross Proved Plus Probable Reserves) and 2C (Gross Contingent Reserves) of 1.4 bnboe. Cairn has producing assets across Rajasthan, Andhra Pradesh, Gujarat, and Assam, and has spearheaded several technological innovations with high-reward prospects, over the last 30 years of its operations. The company has a vision to contribute 50% of India’s domestic production, executing one of the largest exploration projects in the country across its diversified portfolio comprising conventional and unconventional projects such as Tight Oil & Gas, Deep & Shallow Water, ASP Injection, Shale Exploration and Satellite Field Monetisation, reinstating the faith in India’s hydrocarbon potential.

Cairn is committed to achieving Net Zero by 2030 by prioritising environmental resilience and is driving transformative social impact at scale. It is the first Indian company to sign the United Nations Environment Programme’s methane reporting and reduction initiative – OGMP 2.0.

About Vedanta Limited

Vedanta Limited (“Vedanta”), a subsidiary of Vedanta Resources Limited, is one of the world’s leading natural resources, critical minerals, energy and technology companies spanning across India, South Africa, Namibia, Liberia, UAE, Saudi Arabia, Korea, Taiwan and Japan with significant operations in Oil & Gas, Zinc, Lead, Silver, Copper, Iron Ore, Steel, Nickel, Aluminium, Power & Glass Substrate and foraying into electronics and display glass manufacturing. For two decades, Vedanta has been contributing significantly to nation building. Governance and sustainable development are at the core of Vedanta’s strategy, with a strong focus on health, safety, and environment. Vedanta has put in place a comprehensive framework to be the ESG leader in the natural resources sector, is committed to reducing carbon emissions to net zero by 2050 or sooner and aims to spend $5 billion over the next 10 years to accelerate this transition. Giving back is in the DNA of Vedanta, which is focused on enhancing the lives of local communities. Anil Agarwal Foundation, the umbrella entity for Vedanta’s social initiatives, aims to spend Rs 5000 crore over the next five years on various social impact programs and its flagship project, Nand Ghar is setting up model anganwadis across India. Vedanta Ltd. ranked among top 5 Sensitivity: Public (C4) in the S&P Global Corporate Sustainability Assessment 2024, and has been listed in the Dow Jones Sustainability World Index. The company has also been certified as a Great Place to Work and Kincentric Best Employer 2023. Vedanta Limited is listed on the Bombay Stock Exchange and the National Stock Exchange.

For more information, please visit www.cairnindia.com / www.vedantalimited.com

For any media queries, please contact:

Ms. Shivanjali Singh

Chief Corporate Communication Officer

Cairn Oil & Gas, Vedanta Ltd

Shivanjali.Singh@cairnindia.com

Mr. Anshuman Bordoloi

Senior Account Manager, Kaizzen PR

Anshuman.Bordoloi@kaizzencomm.com